LIQUID COOLANT NOZZLE FOR MACHINE TOOL

Title:

LIQUID COOLANT NOZZLE FOR MACHINE TOOL

Document Type and Number:

WIPO Patent Application WO/2000/040366

Kind Code:

A1

Abstract:

A liquid coolant nozzle (3) for a machine tool comprising: a) an inner peripheral wall (15), b) an internal flange (23) formed on the inner peripheral wall (15) for supporting an inner side flow path, c) an upper frame structure comprising a ceiling surface for allowing liquid coolant flowing out upwardly from the inner side flow path to flow radially on a plane and an outer peripheral wall (17) for bending the flowing liquid downward to allow it to flow down and forming an outer side flow path jointly with the outer wall surface of the flange (23), at least one portion of the wall surface being provided with a flow-disturbing recess (27), and d) a lower frame structure (19) forming a flow guide bed for guiding centripetally the liquid coolant, which has reached the lower end of the outer peripheral wall (17), via at least one-stage step difference disposed below the flange (23); whereby e) a waterfall-like liquid coolant veil of a tubular or inverted cone shape surrounding a cutting edge can be formed by allowing the liquid coolant to flow down using the inner peripheral edge of the flow guide bed as a circular top of a waterfall (28).

Inventors:

NAKAI YOSHIKAZU (JP)

Application Number:

PCT/JP1998/005997

Publication Date:

July 13, 2000

Filing Date:

December 28, 1998

Export Citation:

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Assignee:

ZETA HEIWA LTD (JP)
NAKAI YOSHIKAZU (JP)

International Classes:

B23Q11/08; B23Q11/10; (IPC1-7): B23Q11/10; B23Q11/00

Foreign References:

JPH04176537A	1992-06-24
JPS6456940U	1989-04-10
JPH0751981A	1995-02-28
JPH0725007B2	1995-03-22

Other References: